/*
 * Licensed to the Apache Software Foundation (ASF) under one or more
 * contributor license agreements.  See the NOTICE file distributed with
 * this work for additional information regarding copyright ownership.
 * The ASF licenses this file to You under the Apache License, Version 2.0
 * (the "License"); you may not use this file except in compliance with
 * the License.  You may obtain a copy of the License at
 *
 *     http://www.apache.org/licenses/LICENSE-2.0
 *
 * Unless required by applicable law or agreed to in writing, software
 * distributed under the License is distributed on an "AS IS" BASIS,
 * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
 * See the License for the specific language governing permissions and
 * limitations under the License.
 */
package com.anywide.dawdler.clientplug.web.validator.operators;

import java.util.List;
import java.util.regex.Matcher;
/**
 * 
 * @Title:  MaxSelectRuleOperator.java   
 * @Description:    选项大于判断   
 * @author: jackson.song    
 * @date:   2007年07月22日     
 * @version V1.0 
 * @email: suxuan696@gmail.com
 */
public class MaxSelectRuleOperator extends RegexRuleOperator {
	public static final String RULEKEY="^maxselect:([1-9]{1}\\d*$)";
	public MaxSelectRuleOperator() {
		super(RULEKEY);
	}
	@Override
	public String validate(Object value, Matcher matcher) {
		int i = Integer.parseInt(matcher.group(1));
		String error = "不能大于"+i+"项!";
		if(value==null)return null;
		if(value instanceof String[]){
			 if(((String[]) value).length>i)return error;
		}else if (value instanceof List){
			if(((List) value).size()>i)return error;
		}
		return null;
	}
	@Override
	public String toString() {
		return "最大选择数或最大参数个数或List或数组的长度不能大于指定数字如:maxselect:3!";
	}
}

